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Finding the Fourth Proportional to 557,759.10, 771,200.55 and 486,900.30

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Solution

The fourth proportional to 557,759.10, 771,200.55 and 486,900.30 is: 673,225.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,759.10 : 771,200.55 = 486,900.30 : x
  2. Step 2: Convert to fraction form
    557,759.10/771,200.55 = 486,900.30/x
  3. Step 3: Cross multiply
    557,759.10x = 771,200.55 × 486,900.30
  4. Step 4: Simplify right side
    557,759.10x = 375,497,779,155.17
  5. Step 5: Solve for x
    x = 375,497,779,155.17/557,759.10
  6. Step 6: Final answer
    x = 673,225.73

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.